Patents by Inventor Joseph C. Eppel

Joseph C. Eppel has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Depth mapping system
    Patent number: 4277167
    Abstract: A depth mapping system is carried from an aircraft flying above the water. pulsed laser directs a pulse at a predetermined water area and a multi-apertured photomultiplier tube receives backscattered or reflected radiation signals from both the air-water interface and a submerged surface. A signal comparator simultaneously compares each of the reflected radiation signals against the air-water interface radiation signal and drives a CRT display which illustrates the depth of the reflecting surface over the predetermined area.
    Type: Grant
    Filed: August 25, 1976
    Date of Patent: July 7, 1981
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventor: Joseph C. Eppel